18
308-385
Operation
Adjusting the Spray Pattern
Follow the steps below to establish the correct fluid
flow and air flow.
Do not turn on the turbine air (TA)
yet.
PRESSURIZED EQUIPMENT
To reduce the risk of a serious injury,
follow the
Pressure Relief Procedure
on page 17 whenever you are instructed
to relieve the pressure.
WARNING
1. Make sure the system pressure is relieved.
2. Loosen the air cap retaining ring, and rotate the air
cap for a vertical or horizontal spray pattern. See
Fig. 12. Then tighten the retaining ring until the air
cap is held firmly in place; you should not be able
to rotate the air cap horns by hand.
Fig. 12
02020
Horizontal Pattern
Vertical Pattern
3. Adjust the fluid flow with the fluid line pressure
regulator. Refer to instruction manual 307–803 to
set the fluid pressure for various fluid flows,
according to the size of the fluid nozzle being
used.
4. Use the air pressure regulator on the atomization
air supply line (A1) to adjust the degree of atom-
ization. Refer to Fig. 13. For example, for a fluid
flow rate of 10 ounces per minute (0.3 liters/min.),
a typical atomization pressure would be 20 to 30
psi (1.4 to 2.1 bar) at the gun manifold.
5. Use the air pressure regulator on the fan air supply
line (A2) to adjust the pattern size.
NOTES:
For the most efficiency, always use the lowest air
pressure possible.
When increasing to a wide, flat pattern, it may be
necessary to increase the supply of fluid to the gun
to maintain the same amount of coverage over a
large area.
See
Spray Pattern Troubleshooting on page 24
to correct spray pattern problems.
Fig. 13
03213
TA
CYL
A1
KV
A2
Manifold Back View
